The following shell script is used to process files in direc

The following shell script is used to process files in directory test which is located in current working directory It has following features Add a prefix \"my\" to all c files in directory test E.g Rename test G as my test.c Add an extension \"bak\" to all txt files in directory test E.g. Rename test txt as test.txt.bak Compile all java files in directory test Count the number of c files in directory test. #1/bin/bash nCfile-0 for dir in i do case \"Sdir\" in * c) *. txt) eaac done echo there are Sncfile C filea in directory test

Solution

nCfile=0
for dir in test/* ; do

case \"$dir\" in
*.c) mv $dir $(printf \'%s\' \"$dir\" | sed \'s,test/,test/my,\')
nCfile=$((nCfile+1))
;;
*.txt) mv $dir $(printf \'%s\' \"$dir\" | sed \'s,test/,test/my,\')
;;

*.java) javac $dir
;;
esac
done

echo there are $nCfile C files in directory test